6 NEMA 5-15R to C14 Power Adapters That Keep Your Gear Running (Home, Office, or Data Center)

If you've ever unboxed a UPS, a PDU, or a piece of networking gear only to find it terminates in an IEC C14 inlet instead of a standard wall outlet, you already know the frustration. The fix is simple and cheap: a NEMA 5-15R to C14 adapter (or cord), which lets a standard U.S. 3-prong plug connect into a device's C14 power inlet  or, in the reverse pairing, lets a C14-corded device plug into a normal wall socket.

These little adapters are unglamorous, but the wrong one (wrong amperage, flimsy build, no safety certification) can be a real liability around expensive electronics. Here are six solid options worth knowing about, ranging from compact block adapters to full-length replacement cords.

1. Signal+Power USA NEMA 5-15R to IEC C14 Plug Adapter

Signal+Power's version is a straightforward block-style adapter: a NEMA 5-15R receptacle on one side and an IEC C14 male plug on the other. It's rated up to 15A at 125V and carries UL approval (UL file# E227892), along with RoHS and REACH compliance. This is the adapter you reach for when you need to add a standard U.S. outlet to a computer power cord, or convert a 5-15P device/cord to the C13 standard inlet.

Signal+Power backs its products with 20+ years of manufacturing experience and offers documentation (drawings, RoHS, REACH reports) directly on the product page, which is a nice touch if you need paperwork for a commercial or institutional purchase. As with any adapter, it doesn't step up or down voltage, so it's meant for like-for-like electrical compatibility, not conversion.

2. SF Cable NEMA 5-15R to C14 Power Plug Adapter

SF Cable's take on this adapter is functionally similar  a compact block adapter rated up to 10A/250V or 15A/125V (stamped 15A 125V)  but it stands out on price and warranty. At around $5, it's one of the more affordable options in this category, and SF Cable backs it with a Lifetime Warranty on cables and non-electronic products, which is unusually generous for such a low-cost item.

It's a simple, no-frills solution for adding a U.S. outlet to a C14-corded device, or for converting a 5-15P power cord to the standard C13 inlet used by countless PCs, monitors, and network devices. If you just need a dependable adapter without paying for a name-brand markup, this is worth a look.

You can check out the full listing here: SF Cable NEMA 5-15R to C14 Power Plug Adapter.

3. Cable Leader C14 to NEMA 5-15R PDU Power Cord Adapter (SVT, 10A/125V)

Unlike the block adapters above, Cable Leader's version is a short 1-foot cord rather than a rigid plug adapter  a C14 male connector on one end and a NEMA 5-15R female receptacle on the other, built with 18 AWG SVT wire. It's specifically marketed for PDU and UPS applications, letting you adapt a rack-mounted C14 outlet so it can power standard U.S. 3-prong devices.

It's UL Listed and rated for 10A at 125V, and its low price point (around $2–3) makes it an easy add when you're stocking a data center or server room with several of these on hand. The flexible cord format is handy in tight rack spaces where a rigid block adapter might not fit well behind other cabling.

4. Tripp Lite (Eaton) NEMA 5-15R to C14 Power Cord Adapter  via CDW

Tripp Lite, now part of Eaton, is one of the most recognized names in power connectivity, and its NEMA 5-15R to C14 adapter (sold through CDW) reflects that reputation. It's UL-listed, rated 15A/125V, and designed to let a device with a standard NEMA 5-15P plug connect to a UPS or outlet with a C13 receptacle  or the reverse, letting you plug a C13 monitor or printer into a switched outlet on your PC so both devices power on and off together.

This is a great pick if brand reliability and after-sales support matter to you; CDW customer reviews consistently praise the fit and build quality. It's a slightly pricier option than the generic block adapters, but for mission-critical office or IT setups, that premium often buys peace of mind.

5. SF Cable NEMA 5-15R to IEC320 C14 Monitor Power Adapter Cord  on Amazon

SF Cable also sells a full-length cord version of this adapter through Amazon, built with 18 AWG wire and rated 10A/125V, UL Listed. Unlike the compact block adapters, this is a proper cord  available in multiple lengths (1ft, 2ft, 3ft, 6ft)  making it more versatile when you need distance between the outlet and the device rather than a direct plug-in adapter.

It's particularly handy for monitors, PCs, and other devices where the built-in cord doesn't reach far enough, or where a rigid adapter block would create strain on the wall outlet. Because it ships and sells through Amazon's fulfillment network, it's an easy same-day-eligible option if you're already ordering other gear there.

6. Cables.com 1ft Power Cord IEC320 C14 to NEMA 5-15R (18 AWG, 10A)

Rounding out the list is Cables.com's 1-foot C14-to-NEMA-5-15R cord, built with 18 AWG wire and rated for 10A. This is another PDU/data-center-style adapter cord, well-suited for short, tidy runs behind server racks or PDUs where a bulky block adapter would be awkward.

Cables.com, part of Datacomm Cables Inc., has built a reputation as a reliable New York-based cable distributor, and this particular listing offers straightforward same-day shipping for in-stock orders  useful when a rack build is waiting on that one missing adapter.

Which One Should You Buy?

If you just need a basic plug adapter for a home office setup, the Signal+Power and SF Cable block adapters are the simplest, most affordable choices  and SF Cable's lifetime warranty gives it a slight edge on value. If you're outfitting a server rack or working with PDUs and UPS units, the short cord-style adapters from Cable Leader or Cables.com are purpose-built for that tight, tangle-prone environment. And if brand trust and support are non-negotiable for a business purchase, Tripp Lite/Eaton via CDW is the safer bet.

Whichever you choose, remember the golden rule of power adapters: they change the connector, not the electricity. Always confirm your device's voltage and amperage requirements match what the adapter is rated for before plugging anything in.